TY  - BOOK
AU  - Trochim, William M. DOnnelly, James P. Arora, Kanika
TI  - Research methods : the essential knowledge base
U1  - 001.42 Q63;4 
PY  - 2016///
CY  - Delhi
PB  - Cengage Leaening
KW  - Research methdologly
KW  - title
ER  -